code: def pbinom(k, n):
      """
      Compute cdf for binomial with prob = 0.5
      compare to R pbinom
      :param k:
      :param n:
      :return: cumulative probability
      """
  
      return binom.cdf(k, n, 0.5)
  
file_path: luminol/src/luminol/utils.py
imports: import csv
  import datetime
  import time
  from luminol import constants, exceptions
  from scipy.stats import binom
  import sys
label_desc: Use image node_id 5 for calling a global function with example usage: pbinom(k, n) and returns: binom